MileSplit Staff Jun 04, 2026 PRO See the rest of this article Access the complete article with MileSplit PRO. Subscribe to keep reading Already a subscriber? Log in. Ranking the top upperclassman Girls 300m Hurdles performers in Massachusetts during the 2026 Outdoor Season. 300 Meter Hurdles Rank Time Athlete/Team Class Meet / Date 1 46.28 Sienna Mercaldi Governor's Academy 2027 ISL Championship May 9, 2026 2 46.63 Adrianna Chechile Wilbraham and Monson Academy 2026 NEPSTA DIII Championships May 16, 2026 3 47.60 Kaelyn Powell Lawrence Academy 2026 ISL Championship May 9, 2026 4 48.70 Tabitha Picucci Groton School 2027 NEPSTA DIII Championships May 16, 2026 5 48.73 Alyssa Durant Thayer Academy 2027 ...